EP2712594A1 - Tampon pourvu de formes de rainure allongées - Google Patents

Tampon pourvu de formes de rainure allongées Download PDF

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Publication number
EP2712594A1
EP2712594A1 EP13186308.6A EP13186308A EP2712594A1 EP 2712594 A1 EP2712594 A1 EP 2712594A1 EP 13186308 A EP13186308 A EP 13186308A EP 2712594 A1 EP2712594 A1 EP 2712594A1
Authority
EP
European Patent Office
Prior art keywords
tampon
groove
pledget
press
fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13186308.6A
Other languages
German (de)
English (en)
Other versions
EP2712594B1 (fr
Inventor
David L. Kimball
Tony C. Ng
Tara Zedayko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson and Johnson GmbH
Original Assignee
Johnson and Johnson GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson and Johnson GmbH filed Critical Johnson and Johnson GmbH
Priority to PL13186308T priority Critical patent/PL2712594T3/pl
Publication of EP2712594A1 publication Critical patent/EP2712594A1/fr
Application granted granted Critical
Publication of EP2712594B1 publication Critical patent/EP2712594B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
    • A61F13/2022—Tampons, e.g. catamenial tampons; Accessories therefor characterised by the shape
    • A61F13/2034—Tampons, e.g. catamenial tampons; Accessories therefor characterised by the shape having grooves or ribs, having a main axis in the longitudinal direction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15747—Folding; Pleating; Coiling; Stacking; Packaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
    • A61F13/2002—Tampons, e.g. catamenial tampons; Accessories therefor characterised by the use
    • A61F13/202—Catamenial tampons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
    • A61F13/2022—Tampons, e.g. catamenial tampons; Accessories therefor characterised by the shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
    • A61F13/2071—Tampons, e.g. catamenial tampons; Accessories therefor characterised by the material or the structure of the outer layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
    • A61F13/2082—Apparatus or processes of manufacturing
    • A61F13/2085—Catamenial tampons
    • A61F13/2091—Catamenial tampons providing grooves on the tampon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/04—Force
    • F04C2270/042—Force radial
    • F04C2270/0421—Controlled or regulated

Definitions

  • the present invention relates to an intravaginal tampon for feminine hygiene.
  • it relates to a tampon having discrete groove forms with visually distinct zones providing different bodily fluid handling characteristics.
  • Intravaginal tampons for feminine hygiene are the most common example of such devices.
  • Commercially available tampons are generally compressed cylindrical masses of absorbent fibers that may be contained by an absorbent or nonabsorbent cover layer.
  • the tampon is inserted into the human vagina and retained there for a time for the purpose of capturing and storing intravaginal bodily fluids, most commonly menstrual fluid. As intravaginal bodily fluid contacts the tampon, it should be absorbed and retained by the absorbent material of the tampon. After a time, the tampon and its retained fluid is removed and disposed, and if necessary, another tampon is inserted.
  • a drawback often encountered with commercially available tampons is the tendency toward premature failure, which may be defined as bodily fluid leakage from the vagina while the tampon is in place and before the tampon is completely saturated with the bodily fluid.
  • the patent art typically describes a problem believed to occur that an unexpanded, compressed tampon is unable to immediately absorb fluid. Therefore, it presumes that premature leakage may occur when bodily fluid contacts a portion of the compressed tampon, and the fluid is not readily absorbed.
  • One way to prevent premature leakage from occurring is to provide designed pathways for fluid moving along the outer tampon surface. While this increase to the pathways may improve the fluid absorption, adding grooves during the manufacturing process can raise process issues.
  • the prior art is replete with examples of attempts to incorporate grooves into tampons. Often new steps are added to an already complicated manufacturing process or the process is not fully described.
  • Friese et al., EP 0422660 B2 discloses an apparatus for producing a tampon with longitudinal grooves.
  • the apparatus for making the tampon includes two groups of dies arranged in a plane perpendicular to the press axis.
  • the first group of dies form press segments and the second group of dies form sliding plates.
  • Each of the dies has press cutters projecting from the faces.
  • the blank is pressed into a preform having a core with high compression and longitudinal ribs separated by grooves.
  • the dies do not include a surface for forming shoulders.
  • the apparatus has press jaws of substantially equal dimensions which are arranged in a star formation with respect to the press axis.
  • the jaws can be moved synchronously between open and closed positions.
  • Each press jaw has a stepped pressing surface including a pressing blade and a pressing shoulder.
  • the area of the pressing shoulder is great than the area of the pressing blade.
  • the pressing blade and pressing shoulder can extend over a circumferential angle ⁇ of between 80 to 150° in the closed or pressing position.
  • the press jaws are slightly retracted to give clearance when the preform is ejected from the press.
  • Van Ingelgem et al., EP 1547555 B1 purports to disclose an apparatus for manufacturing tampons with at least three press jaws, each press jaw having a penetrating segment for penetrating the absorbent material and pressing shoulder.
  • the median of the penetrating segment diverges from the radius of that penetrating segment when in the press.
  • the median of the penetrating segment is the straight line drawn in a cross section of the penetrating segment, through its tip and the midpoint of its base.
  • One press jaw may comprise either a penetrating segment or a pressing shoulder, or a combination of one penetrating segment and pressing shoulders arranged at either or both sides of the penetrating segment.
  • the penetrating segment and pressing shoulders are fixed to separate press jaws, it is preferably that they press simultaneously.
  • the press jaws, in particular, the penetrating segments can have a straight, sinusoidal, spiral or helical shape in the longitudinal direction to form essentially straight, sinusoidal, spiral, or helical grooves in the axial direction of the tampon.
  • the resultant tampon has at least three ribs, in transverse cross-section, has a median at least partially diverging from the radius where the median of the rib is the line drawn through the midpoint of a series of arc lines, bound by the edges of the rib, wherein the arcs have a common center which is the midpoint of the X-X cross-section of the tampon.
  • Ruhlmann WO 2009/129910 A1 , purports to disclose a tampon having at least one first surface groove and at least one second surface groove that crosses the first surface groove along their path between a proximal end and a distal end of the tampon.
  • the disclosure fails to teach how the crossing grooves are formed, especially in a commercially-feasible manufacturing process and/or with a cover.
  • Fung, US 2011-0092940 A1 discloses an intravaginal tampon formed of compressed material and has an outer surface with at least two segmented grooves are formed therein, and each segmented groove is separated from and spaced at a distance from an adjacent segmented groove.
  • Each segmented groove has at least one substantially longitudinal segment and at least one accumulator segment. The arrangement of the segments provides a pooling region to impede bodily fluid flow along the outer surface of the tampon.
  • an intravaginal tampon for feminine hygiene includes a generally cylindrical absorbent pledget and a withdrawal element operatively connected to the generally cylindrical pledget proximate to the withdrawal end thereof.
  • the absorbent pledget includes a mass of fibers compressed into a self sustaining shape and a sheet-like fluid-permeable cover substantially enclosing the mass of fibers.
  • the absorbent pledget has formed thereon or therein a plurality of detached groove forms. At least two of said detached groove forms each has a length, measured along the groove, that is at least 150% of the length of the pledget; each has a major axis having a generally longitudinal orientation; and each has a turn proximate to at least one of the insertion end and the withdrawal end.
  • grooves may be “penetrating grooves”, extending at least 0.7 mm (or 10% of the radius, whichever is greater) into the tampon or they may be “shallow grooves", primarily surface indentations without significant penetration (of not more than 0.7 mm, not more than 10% of the radius) into the tampon body. Regions between grooves may take the form of ribs.
  • groove form and variants thereof relates to a groove or combination of groove segments that are connected in a visibly identifiable manner to provide a unique feature, at least on the surface of the tampon pledget, detached from other grooves and/or groove forms.
  • the term "turn” and variants thereof relates to a portion of the groove form in which the groove and/or groove elements reverse(s) upon itself/themselves in a substantially U-shaped or a substantially V-shaped configuration.
  • a “turn” can also have a generally linear extension from the intersection, such as a substantially Y-shaped configuration, but it does not have multiple extensions, such as an X-shaped or +-shaped configuration formed by crossing intersecting lines in which both lines continue beyond the intersection in different paths (such as shown in Ruhlmann, WO 2009/129910 A1 ).
  • the term "major axis" and variants thereof relating to the groove form is defined by the shortest line connecting the most distant points of the groove form. Generally, this major axis will pass through at least one turn proximate to one end of the pledget.
  • the term "longitudinal axis" and variants thereof relate to an axis that runs from the insertion end to the withdrawal end substantially through the center of the tampon.
  • the term "self sustaining shape” and variants thereof relate to a tampon pledget that is compressed and/or shaped to assume a general shape and size that is dimensionally stable.
  • a digital tampon that has a self-sustaining shape will generally maintain its shape after a primary package or overwrap is removed and will generally maintain such shape for vaginal insertion.
  • the tampon is intended to absorb bodily fluids, and may substantially change shape during use as it absorbs such fluids.
  • the term "pledget" and variants thereof relate to a pad or a compress of absorbent material such as fibers designed to absorb bodily fluids.
  • oriented substantially longitudinally and variants thereof relate to a groove or a groove segment or a groove form that has a helix angle of greater than 45°.
  • fiber density and variants thereof relate to the relative proportion of fibers to void space in a given volume of the fibrous structure.
  • the present invention relates to a tampon with reduced opportunity for bodily fluid to flow along the surface without being absorbed into the tampon pledget.
  • This is accomplished by providing at least two detached groove forms each having a generally longitudinal orientation, a length (measured along the groove) that is at least 150% of the length of the pledget, and a turn proximate to at least one of an insertion end and a withdrawal end.
  • the detached groove forms provide visually distinct zones with different bodily fluid handling characteristics.
  • the turn proximate to at least one end of the tampon provides at least two groove paths for the fluid to follow to be distributed to different portions of the tampon pledget.
  • the present invention provide tampons with a plurality of grooves, recognized by the prior art as providing improved fluid handling characteristics, but it also provides either fully or partially closed absorption zones that visually communicate functional benefits to the user, including absorbent reservoirs to better contain bodily fluids in the tampon.
  • an intravaginal tampon 10 for feminine hygiene includes a generally cylindrical absorbent pledget 20 and a withdrawal element 30 extending therefrom.
  • the pledget 20 has a longitudinal axis 21, an insertion end 22 (which may terminate in a dome 23), and a withdrawal end 24.
  • the pledget includes a mass of fibers compressed into a self sustaining shape and a sheet-like fluid-permeable cover 25 (such as an apertured film cover) substantially enclosing the mass of fibers.
  • the withdrawal element 30, such as a string is operatively connected to and extends from the pledget 20 proximate to the withdrawal end 24 thereof.
  • the pledget 20 includes a plurality of detached groove forms 40 arranged about the outer surface of the pledget 20.
  • the detached groove forms 40 each comprise a pair of wavy groove segments 41,42 that link to create a turn 43 proximate to the insertion end 22 of the pledget 20 and are separate proximate to the withdrawal end 24.
  • additional longitudinal grooves 44 are disposed between detached groove forms 40.
  • Fig. 3 is similar to the embodiment of Fig. 1 . However, in the embodiment of Fig. 3 , the turn 43 is proximate to the withdrawal end 24.
  • Fig. 4 is similar to the embodiment of Fig. 1 . However, in the embodiment of Fig. 4 , an additional longitudinal groove segment 45 links with groove segment 42 to form a second turn 43 proximate to the withdrawal end 24. This forms a substantially inverted "N-shaped" detached groove form.
  • the detached groove forms 40' each comprise a pair of groove segments 41',42' that link to create a turn 43' proximate to both the insertion end 22 and the withdrawal end 24 of the pledget 20 to provide discrete surface zones 46 bounded by the encircling groove forms 40'.
  • additional longitudinal grooves 44 are disposed between detached groove forms 40'.
  • the groove forms may comprise a plurality of groove segments.
  • These groove segments may have a configuration that is a straight line, a plurality of linked angled segments (such as a saw tooth waveform or a square waveform), a plurality of curved segments (such as a sinusoidal waveform), and combinations thereof.
  • the configuration of the groove segments may differ between groove forms, or they may be the same.
  • the configuration of groove segments within each groove form may also be the same or different.
  • Additional grooves, including longitudinal grooves 44, may be configured similarly to or distinct from each other and the configuration of the groove segments making up the groove forms 40.
  • the absorbent pledget includes a mass of fibers compressed into a self sustaining shape.
  • the pledget may also include additional absorbent materials such as foam, superabsorbent, hydrogels, and the like.
  • Preferred absorbent material for the present invention includes foam and fiber.
  • Absorbent foams may include hydrophilic foams, foams which are readily wetted by aqueous fluids as well as foams in which the cell walls that form the foam themselves absorb fluid.
  • the fibers employed in the formation of the absorbent body include regenerated cellulosic fiber, natural fibers and synthetic fibers.
  • the materials employed in the formation of a tampon according to the present invention include fiber, foam, hydrogels, wood pulp, superabsorbents, and the like.
  • a useful, non-limiting list of useful absorbent body fibers includes natural fibers such as cotton, wood pulp, jute, and the like; and processed fibers such as regenerated cellulose, cellulose nitrate, cellulose acetate, rayon, polyester, polyvinyl alcohol, polyolefin, polyamine, polyamide, polyacrylonitrile, and the like.
  • tampon fibers are rayon, cotton, or blends thereof, and more preferably, the fibers are rayon.
  • the fibers may have any useful cross-section.
  • Fiber cross-sections include multi-limbed and non-limbed.
  • Multi-limbed, regenerated cellulosic fibers have been commercially available for a number of years. These fibers are known to possess increased specific absorbency over non-limbed fibers.
  • a commercial example of these fibers is the Galaxy® multilimbed viscose rayon fibers available from Kelheim Fibres GmbH, Kelheim, Germany. These fibers are described in detail in Wilkes et al., US Pat. No. 5,458,835 , the disclosure of which is hereby incorporated by reference.
  • the fibers include hydrophilic fibers, and more preferably, the fibers include absorbent fibers, i.e., the individual fibers, themselves, absorb fluid.
  • a useful, non-limiting list of useful tampon fibers includes natural fibers such as cotton, wood pulp, jute, hemp, and the like; and processed fibers such as regenerated cellulose, cellulose nitrate, cellulose acetate, rayon, polyester, polyvinyl alcohol, polyolefin, polyamine, polyamide, polyacrylonitrile, and the like.
  • Other fibers in addition to the above fibers may be included to add desirable characteristics to the absorbent body.
  • hydrophobic fibers may be used in outer surfaces of the tampon to reduce surface wetness and hydrophilic fibers may be used to increase the rate of fluid transport into and throughout the body.
  • the tampon fibers are rayon or cotton, and more preferably, the fibers are rayon.
  • the fibers may have any useful cross-section.
  • the pledget includes a mass of fibers substantially enclosed by a sheet-like cover material fluid-permeable cover.
  • the cover encloses a majority of the outer surface of the tampon. This may be achieved as disclosed in Friese, U.S. Patent No. 4,816,100 , the disclosure of which is herein incorporated by reference.
  • either or both ends of the tampon may be enclosed by the cover.
  • some portions of the surface of the tampon may be free of the cover. For example, the insertion end of the tampon and a portion of the cylindrical surface adjacent this end may be exposed, without the cover to allow the tampon to more readily accept fluids.
  • the cover can ease the insertion of the tampon into the body cavity and can reduce the possibility of fibers being separated from the tampon.
  • Useful covers are known to those of ordinary skill in the art, and they are generally dimensionally stable with low elongation in both the machine and cross-direction. They may be selected from an outer layer of fibers which are fused together (such as by thermobonding), a nonwoven fabric, an apertured film, or the like. Preferably, the cover has a hydrophobic finish.
  • a process useful in the formation of an intravaginal tampon for feminine hygiene of the present invention with grooved zones begins with an open fibrous structure.
  • the open structure may be a nonwoven fibrous web, a mass of randomly or substantially uniformly oriented fibers and optional materials, such as foams, or particles, and the like. This mass is then manipulated to form a tampon blank.
  • a nonwoven web useful in the present invention can be formed in any manner desired by the person of ordinary skill in the art.
  • fibers can be opened and/or blended by continuously metering them into a saw-tooth opener.
  • the blended fibers can be transported, e.g., by air through a conduit to a carding station to form a fibrous web.
  • a mass of substantially randomly oriented fibers can be formed by opening and/or blending them, transporting them, as above, to a station to form, e.g., a teabag-type tampon blank.
  • Further processes may employ oriented fibers in a fibrous tow.
  • the tampon blank can be further processed to form a tampon.
  • a web can be formed into a narrow, fibrous sliver and spirally wound to form a tampon blank.
  • a liquid-permeable cover material can be wrapped around the tampon blank to substantially contain the fibrous absorbent portion of the tampon. It may be desired to process the fibrous sliver with selective needle-punching of the sliver as disclosed in US Pat. No. 7,845,055 to Kimball et al. , the disclosure of which is herein incorporated by reference.
  • the intravaginal tampon for feminine hygiene of Fig. 1 having a predetermined finished diameter can be formed in a press 100 having (1) a generally cylindrical press cavity 102 having a central press axis 104 and a substantially cylindrical circumference and (2) a plurality of elongate press dies.
  • a partially broken-away perspective view of the press 100 is shown in Fig. 7 . This figure includes only seven of sixteen press dies and a portion of the press cam removed for clarity.
  • the press dies may include penetrating dies 106 having pressing faces for defining a set of penetrating grooves that extend into the finished tampon pledget and shaping dies 108 for forming surface features, including shallow grooves on the outer surface of a resulting compressed tampon pledget, or smoothing the outer surface of a resulting compressed tampon pledget, or forming a continuous diameter for guiding resulting compressed tampon pledget out of the press during the ejection step.
  • the penetrating dies 106 and shaping dies 108 alternate about the circumference of the cylindrical press cavity.
  • a first penetrating die 106a has a pressing face 107 and shape corresponding to groove segment 41 and a second penetrating die 106b has a shape corresponding to groove segment 42 (of Fig. 1 ).
  • one end 150a of the first penetrating die 106a extends beyond the corresponding end 150b of the second penetrating die 106b.
  • the end 150b of the second penetrating die 106b is curved toward the first penetrating die 106a in order to form the turn 43 in the surface of the tampon pledget 20 (as shown in Fig. 1 ) proximate to the insertion end 22.
  • the end 150a of the first penetrating die 106a corresponds to the insertion end 22 of the tampon pledget 20 of Fig. 1 .
  • Turn 43 of the detached groove form 40 is formed by the link between groove segments 41 and 42 (see Fig. 1 ).
  • the penetrating dies 106a,106b travel on a path that crosses during the compression of the tampon blank 200 (see Fig. 9 ) to form the pledget 20. Therefore, the longer penetrating die 106a has a notch 152 formed (see Fig. 8 ) proximate to, although spaced from, the end 150a to permit the end 150b of penetrating die 106b to pass across the path of travel of penetrating die 106a.
  • the shaping dies 108 are shaped to accommodate the shape of the penetrating dies 106 disposed therebetween.
  • shaping die 108a corresponds to the surface of the pledget 20 contained by the groove segments 41 and 42 and the turn 43.
  • This shaping die 108a is shorter than shaping die 108b corresponds to the surface of the pledget 20 that is open to the insertion end 22.
  • the grouping of the four press pieces may be repeated four times to provide four "petals" around the circumference of the tampon pledget.
  • a substantially cylindrical tampon blank 200 is inserted into the press cavity 102 in an open position shown in Fig. 9 (a cross-section of the press of Fig. 6B and tampon proximate to the notch 152 in the first penetrating die 106a, looking from the interior of the press toward the end of the press corresponding to the insertion end of the tampon in Fig. 1 ), after which an initial compression step is performed.
  • this initial compression step at least the penetrating dies 106 are moved into the press cavity 102 to a penetrating die closed position having a clear distance "r" (see Fig. 11 ) from the press axis 104 that is less than the predetermined finished diameter as shown in Fig.
  • a second compression step that applies to the substantially longitudinal ribs of the preform a radial pressure directed toward the central press axis to provide a compressed tampon pledget of reduced diameter relative to the preform is represented in Figs. 13 (a cross-section of the press, proximate to the center of the press cavity) and 14 (an end view of the press).
  • the penetrating dies 106 are retracted to assume a clear distance from the press axis that is sufficient to permit the shaping dies 108 to advance toward the press axis beyond the penetrating dies. Then the set of shaping dies is moved to a shaping die closed position.
  • the compressed tampon pledget may be ejected from the press cavity 102 using the shaping dies 108 to provide a substantially smooth guide for the compressed tampon pledget to permit removal of the compressed tampon pledget from the press and pushing on one end of the compressed tampon pledget with a push rod 110 (shown in Fig. 15 ).
  • the tampon can be further shaped and packaged.
  • the insertion end can be formed into a hemispherical or elliptical dome shape, and the tampon can be enclosed in a primary packaging material that can also support the final shape of the tampon.
  • the tampon press 100 of Figs. 7 and 8 includes a cam 120, penetrating die assemblies 130, and shaping die assemblies 140.
  • the cam 120 is generally circular and includes slots 122 to urge the die assemblies 130, 140 into and out of the press cavity 102 as the cam is pivoted about the press axis 104.
  • Each penetrating die assembly 130 includes a pair of slides (an exemplary slide 132 is shown on one side of the cam 120; another, not shown, would be on the opposite side of the cam 120) and the penetrating die 106.
  • Each shaping die assembly 140 includes a pair of slides (an exemplary slide 142 is shown on one side of the cam 120; another, not shown, would be on the opposite side of the cam 120) and the shaping die 108.
  • multiple cams 120a, 120b may be used to permit more variability to the control of the movement of the dies, e.g., one cam could operate penetrating dies 106 and another could operate shaping dies.
  • compressed pledget 20 Upon ejection from the press 100, compressed pledget 20 is generally cylindrical as shown in Fig. 16 .
  • the pressed groove segments generally extend from the insertion end 22 to the withdrawal end 24.
  • Those pressed groove segments 50 that extend from the turn 43 to the insertion end 22 of the pledget will essentially be restructured in the doming process mentioned above to substantially eliminate them, both aesthetically and functionally. This is enhanced by the absence of the cover 25 in the region of the dome 23.
  • the penetrating jaws 106a, 106b may be controlled to advance them separately.
  • penetrating jaw 106b may be advanced to the closed position, withdrawn sufficiently to permit penetrating jaw 106a to fully advance toward the press axis 104 in the closed position. This eliminates the need for notch 152 in penetrating jaw 106a, as the two penetrating jaws do not need to occupy the same space.
  • this could permit penetrating jaws 106a to remain in contact with the compressed tampon pledget 20 during ejection from the press.
  • FIG. 17 A line drawing of the pressing faces 107 of a set of three adjacent penetrating dies for such an embodiment is shown in Fig. 17 .
  • penetrating dies 106a',106b' create the linked groove form
  • independent penetrating die 106c forms the additional groove 44 between groove forms 40' of Fig. 6 .
  • the tampon blank may be compressed as described in Friese et al., U.S. Pat. No. 4,816,100 ; Leutwyler et al., U.S. Pat. No. 5,813,102 ; Schwankhardt, U.S. Pat. No. 5,909,884 ; and/or Schoelling, US 2002-0151859 A1 (the disclosures of which are herein incorporated by reference) with additional post-processing in which longitudinal grooves substantially smoothed to reduce their appearance, and shallow, detached groove forms are pressed.
  • a tampon 320 produced according to the teaching of Leutwyler et al., U.S. Pat. No.
  • a finishing mold 330 having a diameter less than the diameter of the tampon 320.
  • three mold elements are used, and only one of the three mold elements 330 is shown for clarity. The other mold elements would extend evenly spaced about the tampon 320.
  • the inner surface 332 of the finishing mold 330 has a pattern of raised elements 334 capable of forming the shallow detached groove forms (similar to detached groove forms in Fig. 1 ). Alternatively as shown in Fig.
  • the tampon 320 could be inserted and maintained in the nip between a calendering roller 340 having an embossed pattern 342 corresponding to the desired detached groove forms and one or more anvil roller(s) 350 for at least one revolution of the tampon. This can result in the desired shallow detached groove forms pressed into the surface of the tampon as shown in Fig. 1 .

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
EP13186308.6A 2012-09-27 2013-09-27 Tampon pourvu de formes de rainure allongées Active EP2712594B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13186308T PL2712594T3 (pl) 2012-09-27 2013-09-27 Tampon z wydłużonymi rowkami

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261706351P 2012-09-27 2012-09-27
US13/717,943 US8827975B2 (en) 2012-09-27 2012-12-18 Tampon with extended groove forms

Publications (2)

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EP2712594A1 true EP2712594A1 (fr) 2014-04-02
EP2712594B1 EP2712594B1 (fr) 2015-09-23

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US (1) US8827975B2 (fr)
EP (1) EP2712594B1 (fr)
JP (1) JP6279270B2 (fr)
CN (1) CN103705347B (fr)
AU (1) AU2013231156B2 (fr)
BR (1) BR102013024945B1 (fr)
CA (1) CA2827987C (fr)
HU (1) HUE028054T2 (fr)
PL (1) PL2712594T3 (fr)
RU (1) RU2633227C2 (fr)

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WO2018220587A1 (fr) * 2017-06-01 2018-12-06 Johnson & Johnson Gmbh Mâchoires de presse de tampon
WO2020253971A1 (fr) 2019-06-21 2020-12-24 Johnson & Johnson Gmbh Tampon pour hygiène féminine

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AT508682B1 (de) * 2009-08-24 2015-11-15 Ruggli Projects Ag Presse zur herstellung eines tampons
US9622919B2 (en) 2014-11-13 2017-04-18 Johnson & Johnson Gmbh Method of shaping a tampon for feminine hygiene
AU201617108S (en) * 2016-06-30 2017-03-15 Johnson & Johnson Gmbh Tampon
RU2731736C2 (ru) 2016-07-29 2020-09-08 Кимберли-Кларк Ворлдвайд, Инк. Тампон
WO2018022845A1 (fr) 2016-07-29 2018-02-01 Kimberly-Clark Worldwide, Inc. Procédé de fabrication d'un tampon hygiénique
TWI627943B (zh) * 2017-01-25 2018-07-01 簡元正 Tampon
IL285936B1 (en) * 2019-03-01 2024-06-01 Tampro Inc Tampon with reduced leakage
US12059331B2 (en) * 2019-09-27 2024-08-13 Johnson & Johnson Gmbh Shaped tampon
US11950986B2 (en) 2019-09-27 2024-04-09 Johnson & Johnson Gmbh Tampon press
EP4034062B1 (fr) 2019-09-27 2024-08-28 Johnson and Johnson GmbH Presse à tampon et tampon façonné
US11918443B2 (en) 2019-09-27 2024-03-05 Johnson & Johnson Gmbh Apparatus for forming a catamenial tampon
USD977632S1 (en) 2020-02-26 2023-02-07 Tampro Inc. Tampon
USD1039690S1 (en) 2020-09-01 2024-08-20 Tampro Inc. Tampon

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US5458835A (en) 1987-07-30 1995-10-17 Courtaulds Plc Process of making viscose staple fibers
EP0422660B1 (fr) 1989-10-12 1994-02-09 McNEIL-PPC, INC. Tampon particulièrement pour l'hygiène féminine et un procédé et dispositif pour sa production
US5813102A (en) 1993-02-15 1998-09-29 Mcneil-Ppc, Inc. Process for producing a tampon having densified, solid, fibrous core
US5909884A (en) 1995-04-27 1999-06-08 Schwankhart; Gerhard Process and apparatus for continuous production of length portions from a strand of fluid-absorbing material
US20020151859A1 (en) 2001-03-26 2002-10-17 Schoelling Hans Werner Tampon having spirally shaped grooves
EP1459720B1 (fr) 2003-02-18 2005-04-27 Hysalma GmbH Tampon hygiénique
EP1547555B1 (fr) 2003-12-22 2006-12-27 Ontex International N.V. Article absorbant
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Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2018220587A1 (fr) * 2017-06-01 2018-12-06 Johnson & Johnson Gmbh Mâchoires de presse de tampon
RU2761372C2 (ru) * 2017-06-01 2021-12-07 Джонсон Унд Джонсон Гмбх Зажимные губки для тампонов
US11395770B2 (en) 2017-06-01 2022-07-26 Johnson & Johnson Gmbh Tampon press jaws
AU2018277255B2 (en) * 2017-06-01 2023-06-01 Johnson & Johnson Gmbh Tampon press jaws
WO2020253971A1 (fr) 2019-06-21 2020-12-24 Johnson & Johnson Gmbh Tampon pour hygiène féminine

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CN103705347A (zh) 2014-04-09
BR102013024945A2 (pt) 2018-01-02
EP2712594B1 (fr) 2015-09-23
RU2013143579A (ru) 2015-04-10
JP6279270B2 (ja) 2018-02-14
AU2013231156A1 (en) 2014-04-10
AU2013231156B2 (en) 2017-09-07
US20140088540A1 (en) 2014-03-27
CA2827987A1 (fr) 2014-03-27
CA2827987C (fr) 2020-03-31
HUE028054T2 (en) 2016-11-28
US8827975B2 (en) 2014-09-09
JP2014069072A (ja) 2014-04-21
PL2712594T3 (pl) 2016-03-31
RU2633227C2 (ru) 2017-10-11
CN103705347B (zh) 2018-07-10
BR102013024945B1 (pt) 2021-07-27

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